MIC5255-2.85YM5 Micrel Semiconductor, MIC5255-2.85YM5 Datasheet
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MIC5255-2.85YM5
Manufacturer Part Number
MIC5255-2.85YM5
Description
Manufacturer
Micrel Semiconductor
Datasheets
1.MIC5255-2.85YM5.pdf
(11 pages)
2.MIC5255-2.85YM5.pdf
(11 pages)
3.MIC5255-2.85YM5.pdf
(11 pages)
Specifications of MIC5255-2.85YM5
Case
153
Date_code
2009+
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MIC5255-2.85YM5
Manufacturer:
MICREL
Quantity:
6 627
Part Number:
MIC5255-2.85YM5
Manufacturer:
MICREL
Quantity:
20 000
Company:
Part Number:
MIC5255-2.85YM5 TR
Manufacturer:
MICREL
Quantity:
9 870
General Description
The MIC5255 is an efficient, precise CMOS voltage regulator
optimized for ultra-low-noise applications. It offers 1% initial
accuracy, extremely-low dropout voltage (135mV at 150mA)
and low ground current (typically 90 A). The MIC5255 pro-
vides a very-low-noise output, ideal for RF applications
where a clean voltage source is required. A noise bypass pin
is also available for further reduction of output noise.
Designed specifically for handheld and battery-powered de-
vices, the MIC5255 provides a TTL-logic-compatible enable
pin. When disabled, power consumption drops nearly to zero.
The MIC5255 also works with low-ESR ceramic capacitors,
reducing the amount of board space necessary for power
applications, critical in handheld wireless devices.
Key features include current limit, thermal shutdown, faster
transient response, and an active clamp to speed up device
turn-off. Available in the 6-pin 2mm 2mm MLF™ package,
the IttyBitty® SOT-23-5 package and the new Thin SOT-23-
5, which offers the same footprint as the standard IttyBitty®
SOT-23-5, but only 1mm tall. The MIC5255 offers a range of
output voltages.
All support documentation can be found on Micrel’s web
site at www.micrel.com.
Typical Application
IttyBitty is a registered trademark of Micrel, Inc.
Micro
August, 2004
MIC5255
LeadFrame and MLF are trademarks of Amkor Technology.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com
C
IN
Shutdown
EN (pin 3) may be
connected directly
to IN (pin 1).
= 1.0 F
Ceramic
Enable
EN
V
IN
MIC5255-x.xBM5
1
2
3
5
4
Ultra-Low-Noise Regulator Application
V
C
OUT
C
Ceramic
BYP
OUT
= 0.01 F
= 1.0 F
SHUTDOWN
ENABLE
1
Features
• Input voltage range: 2.7V to 6.0V
• Thin SOT package: 1mm height SOT-23-5
• Ultra-low output noise: 30 V(rms)
• Stability with ceramic output capacitors
• Ultra-low dropout: 135mV @ 150mA
• High output accuracy:
• Low quiescent current: 90 A
• Tight load and line regulation
• TTL-Logic-controlled enable input
• “Zero” off-mode current
• Thermal shutdown and current limit protection
Applications
• Cellular phones and pagers
• Cellular accessories
• Battery-powered equipment
• Laptop, notebook, and palmtop computers
• Consumer/personal electronics
1.0% initial accuracy
2.0% over temperature
V
EN
IN
150mA Low Noise Cap CMOS LDO
MIC5255
MIC5255-x.xBML
1
2
3
6
5
4
C
(optional)
BYP
M0385-080204
C
OUT
Micrel
V
OUT